Reply to Channel levels?

Channel levels on my s4 software are not going up to corrisponde with the actual s4 unit? Everything else works fine apart from this stange problem, i have tried a reinstall but still the same problem, when i move the faders down they still stay up on the software? Any advice, i have TP2 2.02 and the s4 3 driver updated. and also how can i get back my 4 backs of channels that i used to have as i,m stuck with just channels 1 and 2 and the moment on the software?